Your car key fob is an essential part of modern vehicle ownership, providing convenient access to your car and its security features. However, like all electronic devices, it relies on a battery to function. Understanding what type of battery goes in your car key fob is crucial to ensure you can always unlock your car, start your engine, and keep your vehicle secure.
What Battery Goes in a Car Key Fob?
The type of battery used in car key fobs varies depending on the make and model of your vehicle. Some common battery types include:
CR2032
This is a common battery size found in many car key fobs. It is a small, round, lithium battery that provides a long lifespan.
CR2025
Similar to the CR2032, this battery is also small and round but slightly thinner. It is used in some key fobs with limited features.
CR1616
This is a smaller battery size often found in key fobs with basic functionality.
Other Battery Types
Some newer vehicles may use different battery types, such as button cell batteries with higher voltage ratings. It is always best to consult your vehicle’s owner’s manual or contact your dealership to determine the specific battery required for your car key fob.
What Battery Goes in a Car Key Fob?
Losing your car keys can be a stressful experience, and a dead key fob battery can add another layer of frustration. Knowing what type of battery your car key fob uses and how to replace it can save you time, money, and a lot of hassle. This article will guide you through the process of identifying the right battery for your key fob and provide step-by-step instructions on how to replace it.
Identifying Your Car Key Fob Battery
The first step is to determine the type of battery your car key fob uses. This information is typically found in your owner’s manual or on a sticker inside the key fob compartment. However, if you don’t have access to these resources, here are some common battery types used in car key fobs:
Common Battery Types
- CR2032
- CR2025
- CR1616
- CR2016
These batteries are all small, coin-shaped lithium batteries. The numbers in the battery code indicate the diameter and thickness of the battery. For example, a CR2032 battery has a diameter of 20 millimeters and a thickness of 3.2 millimeters. (See Also: Can Jumping A Car Kill Your Battery)
Checking Your Key Fob Battery
To check if your key fob battery is dead, try pressing the unlock and lock buttons. If the buttons don’t respond or the car doesn’t react, the battery is likely dead and needs to be replaced.
Replacing Your Car Key Fob Battery
Replacing a car key fob battery is a relatively simple process that can usually be done at home. Here are the general steps involved:
Tools You’ll Need
- A small flathead screwdriver
- A new battery of the correct type (refer to the battery code on your key fob or owner’s manual)
Steps to Replace the Battery
1.
Locate the battery compartment on your key fob. It is usually located on the back of the fob and is secured by a small screw or a snap-on cover.
2.
Use the screwdriver to carefully remove the screw or pry open the snap-on cover. Be gentle to avoid damaging the key fob.
3.
Once the compartment is open, you will see the battery. Carefully remove the old battery. (See Also: What Kills The Battery In A Car)
4.
Insert the new battery, ensuring that the positive (+) and negative (-) terminals are aligned correctly. Refer to the battery’s markings or the key fob’s diagram for guidance.
5.
Close the battery compartment and secure it with the screw or snap-on cover.
Testing the New Battery
After replacing the battery, test the key fob by pressing the unlock and lock buttons. The car should respond accordingly. If it doesn’t, double-check that the battery is inserted correctly and that the terminals are making good contact.
Key Takeaways
Replacing a car key fob battery is a straightforward process that can be done at home with a few simple tools. By identifying the correct battery type for your key fob and following the steps outlined above, you can easily extend the life of your key fob and avoid the inconvenience of a dead battery.
Recap
This article provided a comprehensive guide on what battery goes in a car key fob, how to identify the correct battery type, check the battery’s status, and replace it. Remember to always refer to your owner’s manual for specific instructions for your car model. With a little knowledge and effort, you can keep your car key fob functioning properly and avoid the frustration of a dead battery. (See Also: Can I Return Car Battery To Costco)
Frequently Asked Questions: Car Key Fob Batteries
What type of battery does my car key fob use?
Car key fobs typically use either a CR2032 or a CR2016 lithium battery. The specific battery type will vary depending on your car make and model. You can usually find the required battery type printed on the back of the key fob itself, or in your car’s owner’s manual.
How do I know if my car key fob battery is dead?
Signs of a dead key fob battery include: the key fob not responding when pressed, the lights on the fob not illuminating, or the car not starting when the fob is used. If you experience any of these issues, it’s likely time to replace the battery.
Can I replace the battery in my car key fob myself?
Yes, you can often replace the battery in your car key fob yourself. Most key fobs have a small compartment on the back that can be opened with a small tool, like a flathead screwdriver. Be sure to consult your car’s owner’s manual for specific instructions on how to open and replace the battery in your key fob.
How often should I replace the battery in my car key fob?
Car key fob batteries typically last for 2-3 years, but this can vary depending on usage and battery quality. It’s a good idea to check the battery periodically and replace it if you notice any signs of weakness.
Where can I buy a replacement battery for my car key fob?
Replacement batteries for car key fobs are widely available. You can purchase them online, at auto parts stores, or even at some grocery stores. Be sure to purchase a battery that matches the type specified for your car key fob.
